NOAA: Seawater contains dissolved salts, proteins, fats, dead algae, detergents and other pollutants, and a bunch of other bits and pieces of organic and artificial matter. If you shake a glass of ocean water vigorously, small bubbles will form on the surface of the liquid. Sea foam forms in this way – but on a much grander scale – when the ocean is agitated by wind and waves. Read more from NOAA here…